Originally Posted by bill r
Could not get Federal Magnum primers to go with out pushing very hard , bought some CCI they fit easy they are one thousands different I am usung GI brass in a 223 with great results untill this has come up, the CCI resolved the problem .
Well, several questions here.
1) Are the primer pockets swaged since it is military brass?
2) What load are you using?
3) WHY magnum primers in such a small case?
Magnum primers raises pressures in a small case. This can lead to problems.
I have never had a problem with Federal primers in GI 5.56mm brass as long as the primer pocket is properly swaged!